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by Alan R


There is no specific cure for homocystinuria. Treatment is focused on managing the levels of methionine. It should begin as early as possible. Treatment may include medication and/or a special diet.


Many people respond to high doses of vitamin B6. The supplement will be needed for the rest of your life. A normal dose of folic acid supplement is helpful. Other medications may also be occasionally needed.

Special Diet

A special diet may help people who don't respond to or don't respond fully to vitamin B6 treatment. Starting the diet early in life can help prevent intellectual disability and other complications. In general, the diet:
  • Restricts foods with methionine
  • Consists mainly of fruits and vegetables
  • Allows little, if any, meats, eggs, dairy products, breads, and pastas


Genetics Home Reference

National Organization for Rare Disorders, Inc.



Canadian Organization for Rare Disorders

Health Canada



Homocystinuria. EBSCO DynaMed website. Available at: Updated September 24, 2013. Accessed May 30, 2014.

Homocystinuria. Genetics Home Reference website. Available at: Updated July 2011. Accessed May 30, 2014.

Homocystinuria. National Organization for Rare Disorders, Inc. website. Available at: Accessed May 30, 2014.


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